Thailand's Rarest Company Types: Households and Extraterritorial 2026
In short
Thirty two companies in Thailand are classified as households employing domestic staff, and only 4 as extraterritorial organizations, the two smallest of the registry's 21 industry sections as of 17 July 2026. Together they make up just 0.0018 percent of the 1,989,709 companies on the books. Households run an unusually strong 13.67 percent net margin. Extraterritorial organizations post a net loss equal to 10.0 percent of revenue. The next smallest section, public administration, still counts only 38 companies before the numbers jump into the thousands.
What are Thailand's smallest registered company categories?
Thailand's company registry sorts every juristic entity into one of 21 industry sections, and two of them barely register at all. Section U, extraterritorial organizations, holds exactly 4 companies nationwide (DBD, 2026). Section T, households employing domestic staff, holds 32. Add them together and you get 36 companies out of 1,989,709 registered across the whole economy, a combined share of 0.0018 percent. The next smallest category, public administration, still only counts 38 companies. After that the numbers jump hard. Water supply and waste management holds 4,818 companies, more than 126 times the count in public administration. Mining and quarrying, the sixth smallest section, already runs into the thousands at 8,231. Compare any of these to wholesale and retail trade, the largest section with 715,976 companies, and Section U's 4 entities look almost like a rounding error.
The six smallest industry sections by company count
- Extraterritorial organizations4
- Households as employers32
- Public administration38
- Water and waste management4,818
- Electricity and gas7,833
- Mining and quarrying8,231
Figures in registered companies.
The gap between the three smallest sections and the rest of the register is enormous. Public administration at 38 companies is still more than 126 times smaller than water and waste management at 4,818.
Thailand's three rarest industry sections
| Category | Section | Companies | Share of register | Net margin | Top company by revenue |
|---|---|---|---|---|---|
| Extraterritorial organizations | U | 4 | 0.0002% | -10.00% | Interpark International Thailand Company Limited |
| Households as employers | T | 32 | 0.0016% | 13.67% | Lamai Sueakok Limited Partnership |
| Public administration | O | 38 | 0.0019% | 5.45% | Dental Corporation Company Limited |
Company count, share of the national register, and net margin by section, as of 17 Jul 2026.
Why two nearly empty categories still matter
The rarity of these sections is not a data error, it is what happens when a national classification system built for factories and shops is stretched to cover every economic unit, including a family that files paperwork to formally employ a housekeeper or driver. Section T exists for exactly that: households that register as a juristic entity to hire domestic staff, rather than running a business that sells anything on the open market. Its 13.67 percent net margin, more than three times the national average of 4.11 percent, reflects tiny household budgets with almost no cost structure to erode, not commercial success. Section U tells the opposite story. It covers embassies, consulates and international bodies with a Thai-registered presence, entities whose purpose is diplomatic or administrative rather than profit seeking. Its net margin comes out negative, a net loss equal to 10.0 percent of revenue on just 18.5 million baht of total revenue across all 4 companies. Neither section behaves like a normal market sector, and that is precisely why they sit at the bottom of the register. For researchers building models off DBD data, both sections are a reminder to check company counts before trusting a sector average, since a handful of filings can swing a tiny section's numbers far more than they ever could in wholesale trade or manufacturing.
Definitions
- Industry section
- One of 21 lettered categories, A through U, in the TSIC classification system, aligned with the UN's ISIC Revision 4, that groups every registered company by its primary declared economic activity.
- Households as employers, Section T
- The classification for households that register as a juristic entity mainly to formally employ domestic staff such as housekeepers or drivers, rather than to sell goods or services on the open market.
- Extraterritorial organizations, Section U
- The classification for embassies, consulates and international bodies that maintain a Thai-registered presence rather than operating as an ordinary commercial business.
- Net margin
- Aggregate net profit as a share of aggregate revenue for a section. A 10 percent net margin means 10 satang of profit for every baht of revenue, and a negative margin means the section reported a net loss.
- Aggregate
- A total calculated by summing every company's figures in a section first, then dividing, rather than averaging each company's individual ratio.
Assumptions
- The registry counts registered juristic entities, not the millions of Thai households that informally hire domestic help without registering a company.
- Sections T and U have very small company counts, so a single filing can shift the net margin, revenue total or top company by a large percentage compared with a section that holds tens of thousands of companies.
- Extraterritorial organizations counted here are Thai-registered juristic entities. Embassies and consulates that operate purely under diplomatic status without a DBD registration are not part of this count.
Methodology
Company counts, revenue, and net profit are aggregated per DBD industry section, using TSIC codes A through U aligned with ISIC Revision 4, from Thailand's Department of Business Development registry, refreshed 17 July 2026. A juristic entity is placed by its primary declared activity, so a household that also runs a side business would count wherever DBD coded its dominant activity. Net margin is aggregate net profit divided by aggregate revenue for companies in that section with a filed financial statement, not the average of each company's own margin. Sections with very small company counts, like households and extraterritorial organizations, move more with each individual filing than a large sector's ratio would, so their figures should be read as a snapshot of a few dozen entities, not a stable industry trend.
How we verified this
- 32 households companies plus 4 extraterritorial companies sum to 36, which divided by 1,989,709 total registered companies equals 0.0018 percent, the combined share stated in the tldr.
- The entity counts for all 21 sections, 4, 32, 38, 4818, 7833, 8231, 13897, 17294, 18486, 19259, 20455, 35567, 52537, 83598, 85273, 100691, 138962, 149608, 230396, 283534 and 715976, were summed and equal 1,986,489, matching the total companies with a classified industry section.
- Section T's net margin was recomputed as 419,543.03 baht net profit divided by 3,069,832.77 baht revenue, equal to 13.67 percent.
- Section U's net margin was recomputed as negative 1,854,330.69 baht net profit divided by 18,538,435.67 baht revenue, equal to negative 10.00 percent.
- Section G, the largest section at 715,976 companies, was divided by Section U's 4 companies to confirm the register's largest section is 178,994 times the size of its smallest.
- Section E's count of 4,818 was divided by Section O's count of 38 to confirm water and waste management is about 126.8 times larger than public administration.
References
- Department of Business Development. (2026). Registered juristic persons and financial statement aggregates. Ministry of Commerce, Thailand. https://www.dbd.go.th/
- United Nations Statistics Division. (2008). International Standard Industrial Classification of All Economic Activities, Revision 4. United Nations. https://unstats.un.org/unsd/publication/seriesm/seriesm_4rev4e.pdf
Frequently asked questions
How many companies in Thailand are classified as households?
32 companies nationwide are classified under Section T, households as employers of domestic staff, equal to 0.0016 percent of the 1,989,709 companies on the DBD register as of 17 July 2026.
How many companies are classified as extraterritorial organizations?
4 companies fall under Section U, extraterritorial organizations, the smallest of the registry's 21 industry sections.
Why are these two categories so small?
Both sections exist to classify economic units that are not ordinary market businesses. Section T covers households that register to formally employ staff, and Section U covers embassies and international bodies with a Thai-registered presence. Almost all economic activity in Thailand falls into commercial sectors like trade, construction and manufacturing instead.
Which industry section has the most registered companies?
Wholesale and retail trade, Section G, leads with 715,976 companies, making it 178,994 times larger than the extraterritorial organizations section.
Cite this page
Chatpong L. (2026). Thailand's Rarest Company Types: Households and Extraterritorial 2026. Max Data Insights. https://maxdatathailand.com/insights/thailands-rarest-registered-company-types-2026
Data & corrections
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Written by
Chatpong L.Founder, Max Data, Max Solutions Co., Ltd.
Chatpong L. leads Max Data, a company-intelligence platform built on Thailand's official business registry. He writes about the structure of the Thai economy using primary registry data. His work covers company formation, industry concentration, and regional business activity.
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This page reports company-level and aggregate statistics only. It names no individuals and makes no claims about any person. Figures are provided for information and may be revised as source data updates.